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Assessments of Bacterial Community Shifts in Sediments along the Headwaters of São Francisco River, Brazil

Molecular Biology Lab, Department of Science and Languages, Federal Institute of Minas Gerais–Bambuí Campus, Bambuí 38900-000, Brazil
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Academic Editor: Antoni Margalida
Received: 8 May 2021 / Revised: 19 May 2021 / Accepted: 26 May 2021 / Published: 31 May 2021
Sustainable use of freshwater resources for human civilization needs requires the assessment and monitoring of freshwater health, and bacterial communities from riverbed sediments have been shown to be susceptible to chronic anthropogenic disturbances in freshwater ecosystems. Here, we took advantage of the occurrence of well-recognized adjacent sections from the Upper São Francisco River basin with well-recognized levels of anthropogenic activity intensity to test the applicability of sediment bacterial communities as bioindicators of impacts on freshwater ecosystems. We applied 16S amplicon sequencing to estimate the diversity and composition of bacterial communities from 12 sampling sites across the Upper São Francisco River basin, classified as being of no, low, or high intensity of anthropogenic activities, and used diversity metrics and LEfSe to compare the patterns of community structure. Our results revealed that accessed sediment environments associated with land areas with a high intensity of anthropogenic activities presented the lowest levels of community diversity, and the bacterial community compositions of these environments were significantly different from the other sampled areas. Our findings can be considered a source of evidence for the usefulness of bacterial community-based approaches as a tool for diagnosis and monitoring of ecosystem health in areas of vulnerable freshwater environments, and can even be incorporated into regular water quality programs. View Full-Text
Keywords: freshwater; river; microbes; community; ecosystem freshwater; river; microbes; community; ecosystem
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MDPI and ACS Style

de Paula, M., Jr.; Costa Silva, T.A.; Araújo, A.S.; Lacorte, G.A. Assessments of Bacterial Community Shifts in Sediments along the Headwaters of São Francisco River, Brazil. Conservation 2021, 1, 91-105. https://0-doi-org.brum.beds.ac.uk/10.3390/conservation1020008

AMA Style

de Paula M Jr., Costa Silva TA, Araújo AS, Lacorte GA. Assessments of Bacterial Community Shifts in Sediments along the Headwaters of São Francisco River, Brazil. Conservation. 2021; 1(2):91-105. https://0-doi-org.brum.beds.ac.uk/10.3390/conservation1020008

Chicago/Turabian Style

de Paula, Marcos, Jr., Thiago A. Costa Silva, Amanda S. Araújo, and Gustavo A. Lacorte 2021. "Assessments of Bacterial Community Shifts in Sediments along the Headwaters of São Francisco River, Brazil" Conservation 1, no. 2: 91-105. https://0-doi-org.brum.beds.ac.uk/10.3390/conservation1020008

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